2640results about How to "Improve seismic performance" patented technology

The invention provides a bridge built-in multi-dimensional self-adaptive tuning vibration reduction and monitoring device based on air energy. The bridge built-in multi-dimensional self-adaptive tuning vibration reduction and monitoring device mainly comprises a bridge health monitoring system, an air energy device, a steel plate spring, a belleville spring, an electromagnetic damper, a hydraulic damper, a hydraulic displacement amplification mechanism and an actuator. The bridge health monitoring system is used for monitoring and analyzing the state of a bridge in real time, finding potential structural problems in time and driving the tuning vibration reduction device to respond according to the monitored vibration and temperature conditions to achieve self-adaptive control over bridge vibration, and the air energy device uses the quality characteristic of the air energy device as a mass block of the tuning vibration reduction device to achieve self-adaptive control over bridge vibration. The damping device plays a key role in vibration reduction, can provide temperature and humidity control for stable operation of a bridge and a monitoring system, and is matched with a spring, a damping system, a hydraulic displacement amplifying mechanism and an actuator to effectively control multi-directional complex vibration of the bridge, adjust the temperature difference between the inside and the outside of the bridge and prolong the service life of the bridge.

The invention relates to a plant steel truss floor support plate, and belongs to the field of building steel structures, the plant steel truss floor support plate comprises a first bottom plate and a second bottom plate, the first bottom plate is arranged on the second bottom plate, the size of the second bottom plate is larger than that of the first bottom plate, and a plurality of first vertical rib positioning grooves are formed in the second bottom plate; the first vertical rib positioning grooves are formed close to the side face of the first bottom plate, second vertical rib positioning grooves are formed in the two sides of the first bottom plate, the second vertical rib positioning grooves penetrate through the bottom and the top of the first bottom plate, the second vertical rib positioning grooves correspond to the first vertical rib positioning grooves in a one-to-one mode and are communicated with the first vertical rib positioning grooves, and the first vertical rib positioning grooves in the two sides of the second bottom plate correspond to each other in a one-to-one mode. The floor support plate has the advantages that the vertical steel bars can be accurately and rapidly positioned, the vertical steel bars are not prone to deviation in the welding process, meanwhile, splicing of the adjacent bottom plates is facilitated, the machining difficulty of the floor support plate is lowered, and the situation of slurry leakage in the concrete pouring process is reduced.

The invention discloses a concrete modular integrated building connecting system which comprises connection of a plurality of concrete modular box bodies, each concrete modular box body is composed of a prefabricated top plate, a prefabricated bottom plate, a prefabricated beam, a prefabricated shear wall and a prefabricated partition wall, and each concrete modular box body is formed through integral pouring; a reserved post-pouring area is arranged at the joint of every two adjacent box components, and notches are formed in the prefabricated top plates; connecting steel bars are in lap joint with the notches, and concrete post-pouring is conducted after the steel bars are in lap joint; u-shaped notches are formed in the prefabricated beams, upper and lower lap joint steel bars are laid at the U-shaped notches, and the two half sections of the prefabricated beams are connected into a whole after concrete is cast in place; a linear vertical notch is formed in the prefabricated shear wall between every two adjacent box bodies, the rib bodies of the wall bodies are connected in the linear notches, all the box bodies are stably connected through lap joint of the reinforcing steel bars and cast-in-place concrete of the cavities, and the prefabricated shear wall is suitable for high-rise buildings, can reduce the workload of a construction site and has good mechanical performance and anti-seismic performance.

The invention discloses a building reinforcement type fabricated structure construction which comprises a prefabricated wall body, a plurality of connecting steel bars are pre-buried in the prefabricated wall body, the ends of the connecting steel bars extend out of the top end of the prefabricated wall body, steel bar inserting holes corresponding to the ends of the connecting steel bars are prefabricated in the bottom of the prefabricated wall body, and the hole diameter of the steel bar inserting holes is larger than the diameter of the connecting steel bars. A reinforcing base is further included, a fixing groove is formed in the bottom face of the reinforcing base, a plurality of through holes corresponding to the rebar inserting holes are formed in the top face of the reinforcing base, and the ends, connected with the rebars, of the top of the lower-layer prefabricated wall body can penetrate through the through holes and then are inserted into the rebar inserting holes in the bottom of the upper-layer prefabricated wall body. The reinforcing base is additionally arranged on the basis of an original prefabricated wall to be connected with the floor and the ground, the reinforcing base is made of a high-strength material and is in an optimized geometrical shape, and the connecting force between the wall and the ground is improved in cooperation with pouring of concrete, so that the reinforcing wall is supported, and the effect of external force can be effectively resisted.

The invention provides a display module and a display device. The display module comprises a display panel which comprises a display area, a binding area and a bending area which is connected with the display area and the binding area in a bending manner; the back film layer is arranged on the backlight side of the display area; the supporting layer is arranged on the side, away from the display panel, of the back film layer; the circuit board is arranged on the side, away from the display panel, of the supporting layer and electrically connected with the display panel; the driving chip is arranged on one side, far away from the supporting layer, of the binding area; the electromagnetic shielding film is arranged on one side, far away from the supporting layer, of the driving chip; the electromagnetic shielding film extends in a first direction so as to cover the circuit board and the driving chip; the first electrode extends in the second direction so as to at least partially cover the bending area; wherein the first direction is perpendicular to the second direction, and the first direction is parallel to the surface of the display area.

The invention discloses a high-rise concrete module which comprises a bottom plate, a top plate and a pair of side plates, the bottom plate, the top plate and the pair of side plates form a cuboid structure with two open ends, one side plate is a wall shell, and the two ends of the wall shell in the length direction form edge constraint component parts. A staggered connecting structure is arranged at the bottom of the edge restraining component part, a positioning structure corresponding to the staggered connecting structure of an adjacent module is arranged at the top of the edge restraining component part, a plurality of vertical key grooves are formed in the outer side of the wall shell at intervals in the length direction, and connecting pieces are arranged in the vertical key grooves. The invention further discloses a construction method of the high-rise concrete module connecting structure. According to the invention, the connection number of the vertical steel bars is reduced, traditional sleeve grouting connection and corrugated pipe slurry anchor lap joint connection are avoided, the field installation efficiency can be obviously improved, and the engineering quality risk is reduced.

A staggered and stacked modular structure system is mainly characterized in that a plurality of rectangular module units are staggered and stacked to form a multi-layer rectangular main body structure, each rectangular module unit comprises a cross beam, a stand column and a connecting piece, each connecting piece comprises a connecting plate, a C-shaped inserting block and a C-shaped inserting cylinder, the C-shaped inserting blocks and the C-shaped inserting cylinders are connected to the connecting plates, and the C-shaped inserting blocks can be inserted into the C-shaped inserting cylinders; the two ends of the stand columns are welded to the connecting plates of the connecting pieces correspondingly, the two ends of the cross beams are welded to the C-shaped inserting cylinders of the connecting pieces correspondingly, grouting spaces are formed after the connecting pieces of every two vertically-adjacent rectangular module units are connected in an inserted mode, and the two rectangular module units are connected through grouting. In order to better transmit the bending moment of the stand column, the inserting block is designed to be in a C shape, and the inserting structure of the two connecting pieces can completely correspond to the section of the stand column through the C-shaped inserting cylinder, so that the tensile strength and the bending strength of the connected stand column are equal, the anti-seismic performance of the modular structure is further improved, and the service life of the modular structure is prolonged. Therefore, the safety of the staggered and stacked modular structure is improved.

The invention discloses a preparation method of magnetic graphene capable of being oriented in a magnetic field. The method comprises the following steps: firstly, coating magnetic particles with tetraethyl orthosilicate, then grafting phenyl-containing siloxane, and combining the magnetic particles with graphene through a pi-pi stacking effect of a non-covalent bond between the phenyl and a benzene ring of the graphene to prepare the magnetic graphene. The magnetic graphene is sprayed on the surface of a concrete matrix after being combined with a coating, and can be oriented along the surface of the concrete matrix under the action of an electromagnetic field to form a dense graphene protective layer. Multiple protection effects are formed in a transverse space parallel to the plane of the base body and a longitudinal space perpendicular to the plane of the base body, the service life of the concrete is prolonged, and the maintenance cost of the concrete is reduced.

The invention discloses a connecting joint for vertical steel bars of a prefabricated panel by adopting UHPFRC (Ultra High Performance Fiber Reinforced Concrete) lap joint, and belongs to the technical field of building structures. The connecting joint comprises a first prefabricated wall panel and a second prefabricated wall panel, wherein the first prefabricated wall panel comprises a connecting hole and a first connecting steel bar; the second prefabricated wallboard comprises second connecting steel bars, the first connecting steel bars and the second connecting steel bars are arranged in the connecting holes at intervals, and UHPFRC is poured into the connecting holes. The connecting holes are formed in the horizontal joints of the bottoms or the tops of the prefabricated wall panels, the connecting steel bars are arranged in the connecting holes, the connecting steel bars extending out of the prefabricated wall bodies adjacent to the horizontal joints are in single-row or double-row lap joint in the connecting holes by pouring the UHPFRC, and therefore formworks and sleeves / casing pipes are omitted, and the construction cost is reduced. The construction technology of vertical steel bar connection in the fabricated shear wall is obviously simplified, and the connection cost is reduced.

The invention relates to the technical field of circuit board preparation, and discloses a multilayer composite circuit board preparation method and a multilayer composite circuit board, and the method comprises the steps: mixing ceramic-based powder with nano metal particles, and carrying out sintering to form a heat-conducting microporous ceramic material with a continuous heat-conducting network and a microporous structure; a plurality of heat-conducting microporous ceramic materials are laminated and then pressed into a composite substrate through vacuum hot pressing, and through heat-conducting through holes are formed in the composite substrate; the composite substrates with the heat conduction through holes are stacked, a micropore layer used for heat conduction and shock absorption is arranged between every two adjacent composite substrates, and the stacked composite substrates and the micropore layers are subjected to vacuum hot pressing to form a multi-layer structure. According to the multi-layer composite circuit board preparation method and the multi-layer composite circuit board, through the continuous heat conduction network, the micropore structure and the micropore layer, the heat conduction performance is remarkably improved, thermal stress and mechanical stress are effectively released through the elastic characteristic of the micropore structure, and the overall stability of the multi-layer composite circuit board is enhanced.

The utility model relates to a concrete modular building suitable for old community reconstruction, which comprises a plurality of concrete modules divided from the same floor space according to different indoor space functions, and a plurality of prefabricated parts divided from a public area according to functions, wherein the prefabricated part comprises a shear wall, a first pouring cavity is formed in the shear wall, and a second pouring cavity is formed between the adjacent concrete modules corresponding to the shear position in the floor space and / or between the adjacent prefabricated part and the concrete module; according to the invention, concrete can be poured in the first pouring cavity and the second pouring cavity so as to form a shear area of the floor, and the shear area can be combined with the corresponding concrete module and / or prefabricated part into a whole by pouring the concrete in the preset first pouring cavity and the second pouring cavity in situ so as to form the shear area of the floor. And the consistency of the shearing force area, the prefabricated parts and the concrete modules is improved, so that the overall strength of the modular building is improved, and the anti-seismic effect is improved.

The invention relates to the technical field of high-strength aluminum alloy forge piece machining, and discloses stamping equipment for high-strength aluminum alloy cover plate production and a stamping method.The outer side face of an equipment outer base is connected with a center bearing table through a connecting arm, and a stamping support is installed at the front position of the upper end face of the center bearing table; the top of the stamping support is horizontally connected with an air cylinder seat, a stamping air cylinder is vertically installed in the middle of the air cylinder seat, an air cylinder rod is movably arranged in the stamping air cylinder in a downward extending mode, and a rigid pressure seat is welded to the lower end of the air cylinder rod. According to the stamping equipment for producing the high-strength aluminum alloy cover plate and the stamping method of the stamping equipment, by means of moving power of the positioning column, a pressing head of the positioning column generates extrusion acting force on the hydraulic column in the moving process, so that a plug seat pushes hydraulic oil in a hydraulic oil cavity, the hydraulic oil flows outwards from a unique oil hole, and the hydraulic oil is conveyed through a pipeline; and the hydraulic oil is upwards injected into the damping oil bag, so that the damping oil bag is transversely expanded after being filled.

The utility model relates to the technical field of constructional engineering, and discloses an engineering structure anti-seismic reinforcing device which comprises a base, an adjusting groove is formed in the middle of the upper end of the base, and limiting grooves are formed in the middle of the front groove wall and the middle of the rear groove wall of the adjusting groove. An adjusting screw rod is movably connected between the middle of the left groove wall and the middle of the right groove wall of the adjusting groove through a bearing in a penetrating mode, an adjusting handle is fixedly connected to the middle of the right end of the adjusting screw rod, and an adjusting plate is connected to the middle of the outer surface of the adjusting screw rod in a threaded mode; and limiting rods are movably connected to the front part and the rear part of the right end of the adjusting plate in a penetrating manner. According to the anti-seismic reinforcing device for the engineering structure, the reinforcing position of a building can be adjusted by arranging the adjusting screw rod and the supporting frame, the use requirement is met, the fixing effect of the reinforcing device and the ground can be enhanced by arranging the ground inserting frame and the ground inserting cone, the stability and the anti-seismic property of the reinforcing device are improved, and the anti-seismic reinforcing device is suitable for being widely used.

The utility model discloses a steel column connecting structure which comprises a vertical steel column, a buffer assembly and a connecting assembly, the buffer assembly comprises a fixing ring, a buffer, a supporting spring and hinge seats, the outer side of the vertical steel column is connected with the fixing ring in a sliding mode, the fixing ring is fixedly provided with a plurality of sets of hinge seats, and the connecting assembly is connected with the buffer. The buffer is hinged to the lower end of the hinge seat, two sets of supporting springs are clamped to the inner side of the buffer, the connecting assembly comprises a connecting block, a limiting groove, a first fixing plate and a second fixing plate, and the connecting block is arranged at the upper end of the vertical steel column in a penetrating mode; and three sets of limiting grooves are formed in the outer side of the connecting block in a penetrating mode, four sets of first fixing plates are symmetrically arranged on the left side and the right side of each limiting groove, and the lower end face of the connecting block is connected with a second fixing plate through bolts. The connecting strength between the cross beam and the vertical steel column can be enhanced, so that the bearing capacity of the cross beam is improved, and collapse caused by overload of the cross beam is avoided.

The utility model provides a concrete filled steel tube flat cylindrical surface outer beam reinforcing node, the outer contour of the section of a concrete filled steel tube flat column is rectangular, a longitudinal insertion plate is arranged between the middle parts of short edges in the column along the full height, and brackets are arranged at the rear part of a left outer cylindrical surface and the front part of a right outer cylindrical surface according to the same structural form; transverse reinforcing plates are respectively arranged in the left area and the right area corresponding to the joint with the bracket; sealing plates and transverse stiffening ribs are arranged on the portions, on the two sides of a bracket connecting web plate, of the end, connected with the concrete-filled steel tube flat column, of the bracket according to the same structural form, and haunched upper flange plates and underarm flange plates are welded to the portions, between the sealing plates and the outer cylindrical surface of the concrete-filled steel tube flat column, of the upper end of a bracket upper flange and the lower end of a bracket lower flange respectively. The haunching upper flange plate and the haunching underarm flange plate are vertically symmetrical, and plate bodies are inclined and are as wide as the bracket. The utility model solves the problem of column exposure of a high-rise steel structure building structure and the problem of insufficient out-of-plane connection rigidity of a flat column system, and is convenient to construct.

The utility model discloses an EPS packing box for an engine cover, and relates to the technical field of product packing, the EPS packing box comprises a base and a top cover, two stacks of packing boxes are placed on the base, the top cover is arranged at the tops of the two stacks of packing boxes, a product groove is formed in the top surface of each packing box, the shape of the product groove is matched with that of the engine cover, and the top cover is arranged on the base. The bottom of the base is connected with a tray. The engine cover packaging structure adopts the packaging components made of EPS materials to package an engine cover, has the advantages of being light in weight and good in shock resistance, enables packaging to be simple and convenient, improves packaging efficiency, and reduces production cost due to the fact that the packaging boxes are sequentially stacked in a reverse staggered mode and through matched connection of the clamping strips and the clamping grooves and limiting of the protruding blocks. And the transportation stability is effectively improved during transportation.

The invention discloses a steel truss bridge pushing and falling construction method which improves the precision of a pre-assembly stage and ensures that the overall shape and structure of a bridge body meet the design requirements by adopting a laser measuring instrument, high-precision calculation, temperature control and other means. According to the steel truss bridge pushing and falling construction method, advanced walking type pushing equipment is used, parameters and configuration of the equipment are adjusted, the pushing construction efficiency and precision are improved, it is ensured that the bridge body stably and accurately moves to the designed position, and the construction efficiency is improved. According to the steel truss bridge pushing and falling construction method, the measuring point positions are arranged on the bridge body, displacement and deformation are monitored in real time, finite element analysis and equipment adjustment are combined, accurate control in the pushing process is ensured, and structural deformation and displacement deviation in the pushing process are effectively prevented.

The utility model discloses a glass curtain wall with a high-strength connecting structure, which belongs to the technical field of glass curtain walls, and is technically characterized by comprising a curtain wall main body, and the curtain wall main body is of a three-layer stacking structure through an arranged butt joint stable mounting mechanism. The transparent sound insulation film for sound insulation is arranged at the joint of the inner-layer curtain wall body and the outer-layer curtain wall body, so that the sound insulation performance of the glass curtain wall is improved, meanwhile, the butt-joint stable installation mechanism also prevents external dust and water from entering a butt-joint installation gap, installation sealing protection of the glass curtain wall is achieved, and the service life of the glass curtain wall is prolonged. In addition, the overall installation stability of the curtain wall is correspondingly achieved through the butt joint stable installation mechanism, the supporting strength and rigidity of the glass curtain wall in use are remarkably improved, the stability is high, vibration and pressure can be buffered and dispersed through the arranged pressure-resistant buffering mechanism, pressure-resistant protection of the glass curtain wall is achieved, the pressure-resistant and anti-seismic performance is high, and the service life of the glass curtain wall is prolonged. The connecting structure has the advantages of good connecting stability and high strength.

The invention discloses an anti-impact and anti-seismic assembly type column with a protection device, and relates to the technical field of building body stand column anti-collision, the anti-impact and anti-seismic assembly type column comprises a foundation bottom plate, an annular bearing body, an anti-seismic plate, an anti-impact module I, an anti-impact module II and a concrete square column with a reinforcement cage, the foundation bottom plate sleeves the outer side of the concrete square column; the annular bearing body is located above the foundation bottom plate and fixed to the outer side wall of the concrete square column. The annular bearing body comprises four pre-buried plates and right-angle connecting assemblies, the four pre-buried plates are vertically arranged on the four side walls of the concrete square column respectively, and any two adjacent pre-buried plates are fixedly connected through the right-angle connecting assemblies. The number of the first anti-impact modules is four, the first anti-impact modules are arranged on the outer sides of the four embedded plates through the anti-seismic plates correspondingly, and the corresponding ends of every two adjacent first anti-impact modules are fixedly connected through the second anti-impact modules. Modularized assembly is adopted, replacement and repair are easy, the corrugated steel plate and the POZD elastomer material are combined, and the anti-seismic and anti-impact capacity is improved.

The invention discloses a self-resetting steel reinforced concrete frame with a swing wall and an assembly method thereof. Compared with a traditional reinforced concrete structure, the steel-reinforced concrete structure has the advantages of being large in bearing capacity, large in rigidity, good in anti-seismic performance and the like. The system comprises three parts, namely steel-reinforced concrete frames on the left side and the right side and a swing wall YBQ in the middle, wherein the steel-reinforced concrete frames on the left side and the right side comprise two steel-reinforced concrete columns and two steel-reinforced concrete beams; the steel-reinforced concrete column is connected with the steel-reinforced concrete beam through the beam-column joint LJD; the swing wall YBQ is connected with the frames on the two sides through the four flexible supports ZC. A column base joint ZJD is arranged at the bottom of the steel-reinforced concrete column and connected with a foundation through a foundation bolt. Under a horizontal earthquake, the swing column, the energy dissipation beam column joint and the swing wall act together, the anti-seismic capacity and the self-resetting capacity of the structure can be greatly improved, and meanwhile the energy dissipation joint is easy to install and can also be replaced after being damaged.

The invention discloses a transformer station two-stage shock resistance toughness optimization method research. The method comprises the following steps: 1, collecting a network topology structure of a transformer station, establishing a network topology graph of the transformer station, collecting equipment fault information, and establishing a fuzzy set of equipment failure probabilities; 2, building a transformer substation toughness index, and building a transformer substation anti-seismic toughness optimization model from a pre-earthquake stage and a post-earthquake stage; 3, reconstructing the two-stage distribution robust optimization model into a two-stage robust optimization model, and performing relaxation processing on state variables in the model; and 4, according to the reconstructed model, solving a two-stage robust optimization model by adopting a nested column and constraint generation algorithm. And step 5, outputting a reinforcement decision of the pre-earthquake stage of the transformer substation, and displaying the reinforcement decision in an image mode. According to the method, a decision maker can be helped to make an optimal transformer substation reinforcement decision, so that the anti-seismic performance of the transformer substation facing uncertain disaster damage and the anti-seismic toughness of the transformer substation are improved to the maximum extent, and the influence of disasters on the transformer substation is reduced.

The invention discloses a three-degree-of-freedom macro-micro composite piezoelectric nano probe station, and relates to the technical field of semiconductor manufacturing and biotechnology. In order to solve the technical problems that in the prior art, an existing motor-driven probe station is large in cooperative control difficulty, the positioning precision and the stability are difficult to consider, the structure is complex, and the energy consumption is high, the technical scheme provided by the invention is that the three-degree-of-freedom macro-micro composite piezoelectric nano probe station is provided. Comprising a probe bench surface, an XY macro-motion mechanism, an XY micro-motion mechanism and a Z-direction mechanism. The XY macro-motion mechanism comprises an X piezoelectric motor and a Y piezoelectric motor which are used for achieving dozens of millimeter level horizontal movement in the X-axis direction and the Y-axis direction respectively. The XY micro-motion mechanism is used for realizing accurate movement of several nanometers to dozens of nanometers in the X-axis direction and the Y-axis direction; the Z-direction mechanism is used for realizing dozens of microns of lifting in the Z-axis direction; the probe bench surface is used for bearing a bearing object and is also used for driving the bearing object to move along the X-axis and Y-axis directions. The device is suitable for semiconductor manufacturing and biotechnology testing work.

The invention relates to the technical field of floating type offshore photovoltaic structures, in particular to a barrel type anchoring foundation of a floating type offshore photovoltaic structure and an installation method of the barrel type anchoring foundation. The multiple auxiliary suction barrels are arranged around a traditional single main suction barrel, the main suction barrel and the multiple auxiliary suction barrels are rigidly connected through the rails, and therefore the overall bearing performance of the foundation is improved. Damping pieces are arranged on the outer wall faces of the main suction barrel and the auxiliary suction barrel, energy brought by wind wave flow loads and earthquake loads can be effectively dissipated, and the overall anti-seismic performance of the foundation is improved. The main suction bucket and the auxiliary suction buckets are connected through the rails, the buckling resistance of the anchoring foundation can be improved, and therefore the overall bearing performance of the anchoring foundation is improved. According to the scheme, the problem that a traditional anchoring foundation is insufficient in performance can be solved.

The invention provides a double-hardness rubber-coated heel lift for a heel and a manufacturing process thereof, the double-hardness rubber-coated heel lift comprises an inner-layer support body and an outer-layer soft elastomer, the support body and the soft elastomer are made of the same materials with different hardness, the surface of one end of the support body is provided with a plurality of connecting columns used for being assembled with the heel, and the other end of the support body is connected with the soft elastomer. The soft elastic body wraps the bottom face and the side face of the supporting body through injection molding and is of an integrated structure. The method comprises the following steps: 1, performing injection molding on a rubber-plastic material through a support special mold to form a support; secondly, the supporting body formed through injection molding is placed in a special mold for soft elastomer injection molding, the soft elastomer material is wrapped and penetrates through the supporting body through second-time injection molding to form a product integrated with the supporting body, the heel lift machined through the technology is high in structural stability, the fusion degree of the supporting body and the soft elastomer is high, the delaminating phenomenon is not prone to occurring, and the service life of the heel lift is prolonged. Even if grease or other pollutants enter in the injection molding process, the phenomenon that the heel lift is delaminated cannot be caused.

The invention relates to the technical field of building design, and discloses a shock absorption and isolation structure of an anti-seismic building, comprising: a protection box for fixing a bridge foundation and providing mounting positions for other components; the shock isolation assembly is installed on one side of the bridge foundation and used for reducing vibration transmitted to a building; the damping assembly is installed in an inner cavity of the shock isolation assembly, and a magnetic field is formed through electrification to increase swing damping of the balance weight ball; the damping assembly comprises a shielding ring, the shielding ring is installed in an inner cavity of the protection box, the inner wall of the shielding ring is sleeved with multiple sets of electromagnetic coils, and one end of each electromagnetic coil is connected with a power supply cable. And through the damping effect of the electromagnetic coil and the counterweight ball, the absorption efficiency of vibration energy is remarkably improved. The magnetic field generated by the electromagnetic coils effectively inhibits swinging of the counterweight ball and dissipates vibration energy, the multiple sets of electromagnetic coils adjust the magnetic field intensity in real time, the damping effect is optimized according to the vibration intensity, impact of energy concentration on the structure is avoided, and therefore damage of vibration to a building is effectively reduced.

The invention discloses a fabricated shear wall component positioning and mounting system and method. The system comprises a steel bar frame arranged at the top of a lower-layer shear wall component and triangular frames arranged on the side face of a to-be-mounted layer shear wall component in parallel at intervals. A connecting handrail is arranged on the tripod; the positions of electrical wiring preformed holes and embedded bolts are positioned by arranging a steel bar frame at the positions of hanging nails on a lower-layer shear wall component, so that the accuracy of embedding of wire pipes and bolts is ensured; the in-place installation track of the to-be-installed layer shear wall component is controlled through the positioning grooves in the triangular frames, so that connection between the to-be-installed layer shear wall component and top joint bars of the lower layer shear wall component is accurate; the connecting handrails are used for assisting in in-place mounting of the to-be-mounted layer shear wall component and the lower layer shear wall component, shaking in the connecting and positioning process of the shear wall and the joint bars of the base is avoided, and the assembling efficiency of the shear wall is improved.

The invention provides a piston type shielding door, and particularly relates to the technical field of radiation shielding, the piston type shielding door comprises a door frame, and the door frame is mounted on a wall body. The upper portion of the side, facing the door frame, of the door body and the left side and the right side, close to the door frame, of the door body are concave inwards to form stepped structures, the moving direction of the door body is perpendicular to the wall, and the door frame is matched with the door body to form labyrinth seal. And the sliding device is fixedly mounted at the bottom of the door body. And the bearing device is mounted on the ground at the bottom of the door body, and the bearing device is interactively matched with the sliding device. And the driving device is fixedly installed on the side, away from the door frame, of the door body, and the driving device is used for driving the door body to move on the bearing device through the sliding device. According to the piston type shielding door, the technical problems that a shielding door is poor in shielding effect, high in construction requirement and serious in abrasion of internal parts are solved, and the piston type shielding door is complete in shielding, low in construction difficulty and long in service life.

The invention discloses a self-resetting device capable of limiting in the transverse bridge direction and preventing a beam from falling in the longitudinal bridge direction and a manufacturing method. The self-resetting device comprises a first connecting structure, a second connecting structure and an energy consumption self-resetting assembly. The first connecting structure comprises an upper bottom plate; the second connecting structure comprises a lower bottom plate, two oppositely-arranged L-shaped steel plates are fixedly connected to the upper portion of the lower bottom plate, and sliding grooves are formed in the opposite sides of the two L-shaped steel plates. The energy consumption self-resetting assembly comprises a round rod, the two ends of the round rod are fixedly connected with steel balls respectively, the round rod is sleeved with an inverted-T-shaped sliding block, the inverted-T-shaped sliding block is in sliding connection with the round rod, the round rod is fixedly connected with two square steel plates, and a spring is arranged between each square steel plate and the inverted-T-shaped sliding block. The round rod between the steel ball and the square steel plate is slidably connected into the sliding groove of the L-shaped steel plate. The self-resetting device can effectively solve the problem of temperature fatigue damage of the damper in the daily operation stage, and can provide self-resetting capacity while effectively controlling the relative displacement of the pier beam under the action of an earthquake.